2020 CITROEN C4 coolant level

9
Instruments
1Driver information
Instrument panel
The instrument panel displays all the information
the driver needs about the status of the vehicle's
various systems.
This information appears in the form of warning
and indicator lamps and messages.
Depending on the vehicle's equipment, the
instrument panel may be either:
–
An LCD display
.
–

A
fully digital display.
LCD instrument panel

1.Coolant temperature indicator (°C)
2. Cruise control/speed limiter settings
3. Display of speed limit signs
4. Engine oil level indicator (depending on
engine)
5. Total distance recorder (miles or km)
6 Digital speedometer (mph or km/h) 7.
Selector position and gear on automatic
gearbox
Gear shift indicator
Driving mode selected
8. Service indicator
Trip computer information
9. Fuel gauge
Digital instrument panel
The digital instrument panel can be personalised.
Depending on the display mode selected, certain
information is hidden or presented differently.




1. Digital speedometer (mph or km/h)
2. Selector position and gear on automatic
gearbox (Petrol or Diesel)
Drive selector position (Electric)
Gear change indicator (Petrol or Diesel)
Driving mode selected
3. Personalisable area
For more information on the Display modes,
please refer to the corresponding section.
4. Fuel gauge (Petrol or Diesel)
Charge level indicator (Electric)
Remaining range (miles or km)
5. Total distance recorder (miles or km)
6. Cruise control or speed limiter settings
Display of recognised signs
Indication of danger zones (with connected
navigation)
For more information on Connected
navigation , refer to the corresponding
section.

12
Instruments
Warning and indicator
lamps
Displayed as symbols, the warning and indicator
lamps inform the driver of the occurrence of a
malfunction (warning lamps) or of the operating
status of a system (operation or deactivation
indicator lamps). Certain lamps light up in two
ways (fixed or flashing) and/or in several colours.
Associated warnings
The illumination of a lamp may be accompanied
by an audible signal and/or a message displayed
in a screen.
Relating the type of alert to the operating status
of the vehicle allows you to determine whether
the situation is normal or whether a fault has
occurred: refer to the description of each lamp
for further information.
When the ignition is switched on
Certain red or orange warning lamps come on
for a few seconds when the ignition is switched
on. These warning lamps should go off as soon
as the engine is started.
For more information on a system or a function,
refer to the corresponding section.
Persistent warning lamp
If a red or orange warning lamp comes on, there
may be fault which needs further investigation.
If a lamp remains lit
The references (1), (2) and (3) in the warning
and indicator lamp description indicate whether
you should contact a qualified professional in
addition to the immediate recommended actions.
(1): You must stop the vehicle.
Stop as soon as it is safe to do so and switch off
the ignition.
(2): Contact a CITROËN dealer or a qualified
workshop.
(3): Visit a CITROËN dealer or a qualified
workshop.
List of warning and
indicator lamps
Red warning/indicator lamps
STOP
Fixed, associated with another warning
lamp, accompanied by the display of a
message and an audible signal.
A serious fault with the engine, braking system,
power steering or automatic gearbox or a major
electrical fault has been detected.
Carry out (1) and then (2).
Engine self-diagnostic system (Petrol or
Diesel)
Fixed.
A major engine fault has been
detected.
Carry out (1) and then (2).
Maximum engine coolant temperatureFixed.
The temperature of the cooling system is
too high.
Carry out (1), then wait until the engine has
cooled down before topping up the level, if
necessary. If the problem persists, carry out (2).
Engine oil pressure (Petrol or Diesel)Fixed.
There is a fault with the engine lubrication
system.
Carry out (1) and then (2).
System malfunction (Electric)Fixed.
A fault involving the electric motor or
traction battery has been detected.
Carry out (1) and then (2).
Cable connected (Electric)Fixed when the ignition is switched on.
The charging cable is connected to the
vehicle's connector.
Fixed when the ignition is switched on,
accompanied by a message.
It is not possible to start the vehicle while the
charging cable is connected to the vehicle’s
connector.
Disconnect the charging cable and close the
flap.

19
Instruments
1



► Press and hold the button located on the end
of the lighting control stalk.
►

Switch on the ignition without starting the
engine; a temporary

display window appears and
a countdown begins.
►

When the display indicates =0, release the
lighting control stalk button; the spanner symbol
disappears.
If you disconnect the battery following
this operation, lock the vehicle and wait
at least 5 minutes for the reset to be
registered.
Reminder of the servicing information
You can view the servicing information by pressing the " Check" button in the
Driving/Vehicle touch screen menu.
Engine oil level indicator
(Depending on version)
On versions fitted with an electric gauge, the
engine oil level status is displayed on the
instrument panel for a few seconds when
the ignition is switched on, after the servicing
information.
The level read will only be correct if the vehicle is on level ground and the engine
has been off for more than 30 minutes.
Oil level correct
This is indicated by the display of " OIL OK" or by
the message "Oil level correct" (depending on
the instrument panel).
Low oil level
This is indicated by the display of " OIL" or by
the message "Oil level incorrect" (depending
on the instrument panel), accompanied by the
lighting of the Service warning lamp and an
audible signal.
If a low oil level is confirmed by a check using
the dipstick, the level must be topped up to avoid
damage to the engine.
For more information on Checking levels, refer
to the corresponding section.
Oil gauge malfunction
This is indicated by the display of " OIL_ _"
or by the message "Oil level measurement
invalid " (depending on the instrument panel),
accompanied by the lighting of the Service
warning lamp and an audible signal.
Contact a CITROËN dealer or a qualified
workshop.
In the event of a malfunction of the
electric gauge, the oil level is no longer
monitored.
If the system is faulty, you must check the
engine oil level using the manual dipstick
located in the engine compartment.
For more information on Checking levels,
refer to the corresponding section.
Coolant temperature
indicator
Depending on the type of instrument panel, this
information is only available in the instrument
panel's customisable area.


With the engine running:
– In zone A, the temperature is correct.
–

In zone
B, the temperature is too high.
The associated warning lamp and the
STOP
warning lamp light up in red on the
instrument panel, accompanied by the display of
a message and an audible signal.
You must stop the vehicle as soon as it is
safe to do so.
Wait a few minutes before switching off the
engine.

20
Instruments
After switching off the ignition, carefully open the bonnet and check the coolant
level.
For more information on Checking
levels, refer to the corresponding
section.
AdBlue® range indicators
(BlueHDi)
The Diesel BlueHDi engines are equipped with
a system that associates the SCR (Selective
Catalytic Reduction) emissions control system
and the Diesel particle filter (DPF) for the
treatment of exhaust gases. They cannot
function without AdBlue
® fluid.
When the level of AdBlue® falls below the
reserve level (between 1,500 and 0 miles (2,400
and 0

km)), a warning lamp lights up when
the ignition is switched on and an estimate
of the distance that can be travelled before
engine starting is prevented is displayed in the
instrument panel.
The engine starting prevention system required by regulations is activated
automatically once the AdBlue
® tank is empty.
It is then no longer possible to start the
engine until the minimum level of AdBlue
® has
been topped up.
Manual display of driving range
While the driving range is greater than
1,500 miles (2,400 km), it is not displayed
automatically.
You can view the range information by pressing the " Check" button
in
the

Driving/Vehicle touch screen menu.
Actions required related to a lack of AdBlue®
The following warning lamps light up when the
quantity of AdBlue® is below the reserve level:
driving range of 1,500 miles (2,400 km).
Together with the warning lamps, messages
regularly remind you of the need to top up to
avoid engine starting being prevented. Refer to
the Warning and indicator lamps section for
details of the messages displayed.
For more information on AdBlue®
(BlueHDi) and in particular on topping
up, refer to the corresponding section.
Warning/ indicator
lamps on Action Remaining
range


Top up. Between 1,500 miles
and 500
miles (2,400
km and 800
km)


Top up as
soon as
possible.Between
500 miles
and 62
miles (800
km and
100
km)


A top-up is
vital, there is
a risk that the
engine will
be prevented
from starting.Between 62
miles and 0
miles (100
km and 0
km)


To be able
to restart the
engine, add at
least 5 litres of
AdBlue
® to the
tank. 0 miles (km)

156
Practical information
Electric motor

1.Screenwash fluid reservoir
2. Engine coolant reservoir (level only)
3. Brake fluid reservoir
4. Battery/Fuses
5. Fusebox
6. 400
V electrical circuit
7. Emergency circuit-breaker for emergency
services and maintenance technicians
For more information on the Charging system
(Electric), refer to the corresponding section.
Checking levels
Check all of the following levels regularly in
accordance with the manufacturer's service
schedule. Top them up if required, unless
otherwise indicated.
If a level drops significantly, have the
corresponding system checked by a CITROËN
dealer or a qualified workshop.
The fluids must comply with the manufacturer's requirements and with
the vehicle's engine.
Take care when working under the bonnet, as certain areas of the engine
may be extremely hot (risk of burns) and the
cooling fan could start at any time (even with
the ignition off).
Used products
Avoid prolonged contact of used oil or fluids with the skin.
Most of these fluids are harmful to health and
very corrosive.
Do not discard used oil or fluids into
sewers or onto the ground.
Empty used oil into the containers reserved
for this purpose at a CITROËN dealer or a
qualified workshop.
Engine oil
The level is checked, with the engine having been switched off for at least 30
minutes and on level ground, either using the oil
level indicator in the instrument panel when the
ignition is switched on (for vehicles equipped
with an electric gauge), or using the dipstick.
It is normal to top up the oil level between two
services (or oil changes). It is recommended
that you check the level, and top up if necessary,
every 3,000 miles (5,000 km).
In order to maintain the reliability of the
engine and emissions control system,
never use additives in the engine oil.
Checking using the dipstick
For the location of the dipstick, please refer
to the illustration of the corresponding engine
compartment.
►

Grasp the dipstick by its coloured grip and
pull it out completely

.
►

Wipe the end of the dipstick using a clean,
lint-free cloth.


► Reinsert the dipstick and push fully down,
then pull it out again to visually check the oil
level: the correct level is between marks A
(max)
and B (min).
Do not start the engine if the level is:
–

above mark
A: contact a CITROËN dealer or a
qualified workshop.
–

below mark B

: top up the engine oil
immediately.

157
Practical information
7Oil grade
Before topping up or changing the
engine oil, check that the oil is suitable
for your engine and complies with the
recommendations in the service schedule
supplied with the vehicle (or available from
your CITROËN dealer or qualified workshop).
Use of non-recommended oil may invalidate
your warranty in the event of engine failure.
Topping up the engine oil level
For the location of the engine oil filler cap, please
refer to the corresponding engine compartment
illustration.
►

Add oil in small quantities, avoiding any spills
on engine components (risk of fire).
►


W
ait a few minutes before checking the level
again using the dipstick.
►

T
op up the level if necessary.
►

After checking the level, carefully screw the
oil filler cap back on

and replace the dipstick in
its tube.
The oil level indication displayed on the instrument panel when the ignition is
switched on is not valid for 30 minutes
following an addition of oil.
Brake fluid
The level of this fluid should be close to
the "MAX" mark. If not, check the brake
pads for wear.
To know how often the brake fluid should be
replaced, refer to the manufacturer's servicing
schedule.
Clean the cap before removing it to refill.
Use only DOT4 brake fluid from a sealed
container.
Engine coolant
(Petrol or Diesel)
It is normal to top up this fluid between
two services.
The check and top-up must only be done with
the engine cold.
A level of coolant that is too low risks causing
major damage to the engine; the coolant level
must be close to the "MAX" mark without ever
going above it.
If the level is close to or below the " MIN" mark, it
is essential to top it up.
When the engine is hot, the temperature of the
coolant is regulated by the fan.
As the cooling system is pressurised, wait at
least one hour after switching off the engine
before carrying out any work.
In order to avoid the risk of scalding if you need
to top up in an emergency, wrap a cloth around
the cap and unscrew the cap by two turns to
allow the pressure to drop.
Once the pressure has dropped, remove the cap
and top up to the required level.
(Electric)
Do not top up the coolant.
If the level is close to or below
the "MIN" mark, it is essential to contact a
CITROËN dealer or a qualified workshop.
Screenwash fluid
Top up to the required level when necessary.
Fluid specification
The fluid must be topped up with a pre-mixed
product.
In winter (temperatures below zero), a fluid
containing an anti-freeze agent which is
appropriate for the temperature conditions
must be used in order to protect the system's
components (pump, tank, ducts, jets).
Filling with pure water is prohibited in all
circumstances (risk of freezing,
limescale, etc.).

239
Alphabetical index
Emergency call 67–68
Emergency switching off
88–89
Emergency warning lamps

66, 165
Emissions control system, SCR

21, 160
Energy economy mode

153
Energy flows

22, 26
Energy recovery

21, 95
Engine

160
Engine compartment

155
Engine, Diesel

137, 155, 165, 183
Engine, petrol

155, 182
Engines

181–183
Environment

7, 34, 85
ESC (electronic stability control)

69
Expanded traffic sign recognition

105
Exterior lighting

60
F
Fatigue detection 125
Filling the AdBlue® tank
158, 161
Filling the fuel tank

137–138
Filter, air

158
Filter, oil

158
Filter, particle

158
Filter, passenger compartment

46, 158
Fitting a wheel

169, 171
Fitting roof bars

152–153
Fittings, boot

55
Fittings, interior

52
Flap, fuel filler

137–138
Flashing indicators 58, 173
Floor, boot, adjustable
56
Fluid, brake

157
Fluid, engine coolant

157
Foglamp, rear

57, 174
Foglamps, front

57, 61
Folding the rear seats

44–45
Frequency (radio)

223
Fuel

7, 137
Fuel consumption

7
Fuel tank

137–138
Fuses

174
G
Gauge, fuel 137
Gearbox, automatic
92–94, 96, 159, 175
Gearbox, manual

92, 96, 159
Gear lever, manual gearbox

92
Gear shift indicator ~ Gear efficiency
indicator

97
Glove box

52
G.P.S.

217
H
Hazard warning lamps 66, 165
Headlamp adjustment
59
Headlamps, automatic dipping

60–61
Headlamps, automatic illumination

59
Headlamps, dipped beam 173
Headlamps, halogen
59, 173
Headlamps, main beam

60, 173
Head restraints, front

40
Head restraints, rear

44–45
Head-up display

10–11
Heated steering wheel

42
Heating

45, 47
Heating, programmable

27, 51
Hi-Fi system

54
High voltage

138
Hill start assist

96–97
Histogramme, fuel consumption

26–27
Horn

67
I
Ignition 88, 227
Ignition on
88
Ignition switch

86–87
Immobiliser, electronic

86
Indicator, AdBlue® range

20
Indicator, coolant temperature

19
Indicator, engine oil level

19
Indicators, direction

58, 173
Inflating tyres

159, 185
Inflating tyres and accessories
(using the kit)

166, 168
Information, vehicle

9, 234
Infrared camera

102
Instrument panel

9, 22, 24, 102

240
Alphabetical index
Instrument panel, LCD 9
Internet browser
218, 221
ISOFIX mountings

78, 81–82
J
Jack 165–166, 169, 224
Jump starting
176
K
Key 28–29, 32–33
Key, electronic
30–31
Keyless Entry and Starting

28, 30–31, 87–88
Key not recognised

88–89
Key with remote control

28, 86
Kit, hands-free

201–202, 226
Kit, puncture repair

166
Kit, temporary puncture repair

165–168
L
Labels, identification 185
Lamp, boot
56
Lamps, parking

58
Lamps, rear

174
Lams with Full LED technology

61
Lane assist

109, 113–115
Lane departure warning active

11 8
Leather (care) 163
LEDs - Light-emitting diodes
58, 172, 174
Level, AdBlue®

158
Level, brake fluid

157
Level, Diesel additive

158
Level, engine coolant

19, 157
Level, engine oil

19, 156
Levels and checks

155–157
Level, screenwash fluid

63, 157
Light-emitting diodes - LEDs

58, 172, 174
Lighting, cornering

61
Lighting dimmer

23
Lighting, exterior

57, 60
Lighting, guide-me home

29, 59–60
Lighting, interior

55
Lighting, mood

55
Lighting, welcome

59
Loading

152–153
Load reduction mode

154
Locking

29, 31
Locking from the inside

32
Locking the doors

32
Low fuel level

137
Lumbar

41
M
Mains socket (domestic network) 141
Maintenance (advice)
139, 162
Maintenance, routine

102, 158–160
Manoeuvring aids (recommendations)

101
Map reading lamps 55
Markings, identification
185
Massage function

41
Mat

54, 102
Menu, main

26
Menus (audio)

197–198, 210–211
Menu short cuts

26
Messages

228
Messages, quick

228
Minimum traction battery charge
level (Electric)

21
Mirror, rear view

43
Mirrors, door

43, 51, 121
Mirror, vanity

52
Misfuel prevention

138
Mobile application

27, 51, 148
Motor, electric

89, 156, 184
Mountings, ISOFIX

78, 81–82
Multimedia support

52
N
Navigation 215–217
Navigation, connected
218–220
O
Obstacle detection 126
Oil change
156
Oil consumption

156